diff -r 792a97818dd1 linux/drivers/media/dvb/dvb-usb/dib0700_core.c
--- a/linux/drivers/media/dvb/dvb-usb/dib0700_core.c	Thu Jul 26 10:49:35 2007 -0300
+++ b/linux/drivers/media/dvb/dvb-usb/dib0700_core.c	Fri Jul 27 14:03:52 2007 +0200
@@ -243,21 +243,18 @@ int dib0700_streaming_ctrl(struct dvb_us
 	b[2] = (0x01 << 4); /* Master mode */
 	b[3] = 0x00;
 
-	deb_info("modifying (%d) streaming state for %d\n", onoff, adap->id);
-
-	if (onoff)
-		st->channel_state |=   1 << adap->id;
-	else
-		st->channel_state &= ~(1 << adap->id);
-
-	b[2] |= st->channel_state;
-
-	if (st->channel_state) /* if at least one channel is active */
-		b[1] = (0x01 << 4) | 0x00;
-
-	deb_info("data for streaming: %x %x\n",b[1],b[2]);
-
-	return dib0700_ctrl_wr(adap->dev, b, 4);
+	if (onoff) {
+		if ((st->channel_state & (1 << adap->id)) == 0) {
+			deb_info("modifying (%d) streaming state for %d\n", onoff, adap->id);
+			st->channel_state |= 1 <<  adap->id;
+			b[1] = (0x01 << 4) | 0x00;
+			b[2] |= st->channel_state;
+			deb_info("data for streaming: %x %x\n",b[1],b[2]);
+			return dib0700_ctrl_wr(adap->dev, b, 4);
+                }
+	}
+
+	return 0;
 }
 
 static int dib0700_probe(struct usb_interface *intf,